Pressure regulating device



Dec. 5, 1939. c. H. M RAVEN PRESSURE REGULATING DEVICE Filed Aug. 23,1938 I III //IIIIIIIIIIII/ INVENTOR. C /vrles/f/v /oz/en. BY J ATT RNEY.

Patented Dec. 5, 1939 UNETED srarsls rasssuna REGULATING DEVICE CharlesH.- McEaven, Houston, Tex., assignor to I 1 Pittsburgh Equitable MeterCompany, Pittsburgh, Pa.,a corporation of Pennsylvania ApplicationAugust 23, 1938, Serial No. 226,294

'5 Claims.

This invention relates generally to pressure regulators and moreparticularly to pressure regulators in which the regulating valve andcontrolling diaphragm are both located within the same enclosure, andhas for its principal object the provision of means for maintaining amore uniform outlet pressure as the rate of flow of the fluid whosepressure is being regulated increases or decreases.

Another object is the provision of a simple, inexpensive and effectivedevice which may be installed in regulators now in use for theaforementioned purpose, without altering the design of such regulators.

This application is a continuation in part of my application forPressure regulating device, Serial No. 727,265, filed May 24, 1934.

With the above and other objects in view which will appear in thedescription, my invention resides in a novel construction, combinationand arrangement of parts as hereinafter described and more particularlydefined by the appended claims, it being understood that such changes ascome within the scope of the claims may be made in the embodimenthereindisclosed.

Figure 1 is a side sectional view of a preferred embodiment of theinvention,

Figure 2 is a plan view of the deflector,

Figure 3 is an elevation of a modification, and

Figure 4 is a plan View of the modification shown in Figure 3.

Referring now in more detail to the drawing, the numeral I indicatesa'deflector which may be made of any material of suflicient strength andhardness to maintain its original shape when in service. The device isshown as having a semi-cylindrical body 2 and has a flat circular flange3 which may be either a part of the semicylindrical part thereof orfastened to said semicylindrical part by any suitable means.

The device is held in position by any suitable means, such as byscrewing removable valve seat 4 into regulator casing or body 5 throughhole 6 in member I, which,'when Valve seat 4 is tightened, will clampthe device in place.

The fluid passing through the regulator emerges from'under valve member9 travelling in a direction which is at right angles to the direction itmust eventually take in order to be discharged through regulatoroutlet 1. The fluid impinges on member I, which acts as a baflle todirect it toward regulator outlet 1. My device relieves diaphragm 8 ofthe impact pressure due to velocity of the fluid toward the diaphragm,which tends toward a lower pressure under the diaphragm, which in turnallows spring in to open valve 9 more than it otherwise would. Thisreduces the variation in pressure at the outlet of the regulator as theload increases or decreases.

In the modification shown in Figures 3 and 4, the valve seat 4 engagesthe flange H of a cylindrical baffle or sleeve l2 to secure it inposition. It will be seen that this modification causes the flow tofollow a stream lined flow between the valve and regulator outlet whichfurtherreduces the pressure acting on the diaphragm due to the highvelocity of the fluid toward the regulator outlet throughout the entiredistance between the valve and regulator outlet.

From the foregoing description taken in connection with the accompanyingdrawing, it will be apparent to those skilled in the art that I providea novel device for improving the regulating ability of pressureregulators.

I claim:

1. The combination with a pressure regulator having a chamber, an inletand an outlet for said chamber, said inlet and outlet beingsubstantially in axial alignment; a valve seat threaded in said inletand having an external annular flange; a valve; a diaphragm in saidchamber remote from said inlet and outlet, and operatively connected tosaid valve; of a deflector having a body and an internal annular flange,the internal annular flange of said body being held against the wall ofsaid chamber by the external annular flange of said valve seat, and thebody of said deflector being arranged between said valve and saiddiaphragm to deflect the fluid between said inlet and outlet away fromsaid diaphragm.

2. The combination with a pressure regulator having a chamber, an inletand an outlet for said chamber, said inlet and outlet beingsubstantially in axial alignment; a valve seat adjacent said inlet; avalve, a diaphragm in said chamber remote from said inlet and outlet,and

operatively connected to said valve; of a deflector having a body heldagainst the wall of said chamber by said valve seat, said body beingarranged between said valve and said diaphragm and serving to deflectthe fluid passing between said inlet to said outlet away from saiddiaphragm.

3. In a pressure regulator, the combination with a casing having aninlet and an outlet opening in substantial axial alignment, of adiaphragm in said casing disposed at one side of the common axis of saidinlet and outlet openings, a valve seat threaded in said inlet openingand having an external annular flange, a valve member co-operating withsaid seat and operatively connected with said diaphragm, said valvemember and diaphragm being mounted in a common chamber within saidcasing, and said chamber being clear and unobstructed except for saidvalve member and connections, so that gas may flow freely therethrough,and a baffle device comprising a hollow cylindrical body having aninternal annular flange, said device surrounding said inlet opening andhaving its internal flange clamped between the external flange of saidvalve seat and the wall of said chamber, and said valve member beingmounted to reciprocate within said device but out of contact therewith,whereby an annular passage between said valve member and the body ofsaid device is provided, and the latter serves to direct the current ofgas toward said outlet opening, and prevent it from impinging upon saiddiaphragm.

4. In a pressure regulator, the combination with a casing having aninlet and an outlet opening in substantial axial alignment, a valve seatthreaded in said inlet opening and having an external annular flange, ofa diaphragm in said casing disposed at one side of the common axis ofsaid inlet and outlet openings, a valve member co-operating with saidinlet and operatively connected with said diaphragm, and a deflectormember interposed between said inlet and diaphragm to prevent gas fromimpinging upon said diaphragm, said deflector member having an internalannular flange secured to said casing under said valve seat flange.

5. In a pressure regulator, the combination with a casing having aninlet and an outlet opening in substantial axial alignment, of adiaphragm in said casing disposed at one side of the common axis of saidinlet and outlet openings, a valve member co-operating with said inletand operatively connected with said diaphragm, and a deflector membercomprising a semi-cylindrical shield around said valve to prevent gasfrom impinging upon said diaphragm.

CHARLES H. MCRAVEN.

